Carbon composite bricks

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Series for Blast Furnaces

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Carbon composite bricks integrate the advantages of both charcoal bricks and traditional ceramic cup materials for blast furnaces, and have reached or exceeded the physical performance level of similar products utilized by Japan in the 4,350m° blast furnace at TISCO. It has been demonstrated by actual furnace use that it can replace microporous molded carbon bricks and ceramic cups in the furnace bottom cylinder; meanwhile, carbon composite bricks have effectively solved the problems inherent in carbon bricks, such as poor resistance to iron dissolution and corrosion, oxidation resistance, zinc erosion resistance, low strength, low resistance to scouring, and improved the safety of production of the blast furnaces.

Index Item	CA-1	CA-2
Al₂O₃,%	≥70	≥75
T.C,%	≥9.0	≥9.0
BD,g/cm⁹	≥2.7	≥2.85
AP,%	≤16	≤15
CCS, Mpa	≥55	≥60
Permeability,mDa	≤1.0	≤0.8
Average pore size,μm	≤1.0	≤1.0
<1μm Pore volume,%	≥70	≥70
Corrosion index to hot metal,%	≤2.0	≤1.0
Oxide rate,%	≤1.0	≤1.0
Slag corrosion ratio,%	≤3.0	≤2.0
TC(200℃),W/mk	≥12	≥15